<template>
  <div class="header">
    <div class="nav-topbar">
      <div class="container">
        <div class="topbar-menu">
          <a href="javascript:;">小米商城</a>
          <a href="javascript:;">MUI</a>
          <a href="javascript:;">云服务</a>
          <a href="javascript:;">协议规则</a>
        </div>
        <div class="topbar-user">
          <a href="javascript:;" v-if="username">{{username}}</a>
          <a href="javascript:;" v-if="!username" @click="login">登录</a>
          <a href="javascript:;" v-if="username" @click="logout">退出</a>
          <a href="/#/order/list" v-if="username">我的订单</a>
          <a href="javascript:;" class="my-cart" @click="goToCart"><span class="icon-cart"></span>购物车({{cartCount}})</a>
        </div>
      </div>
    </div>
    <div class="nav-header">
      <div class="container">
        <div class="header-logo">
          <a href="/#/index"></a>
        </div>
        <div class="header-menu">
          <div class="item-menu">
            <span>小米手机</span>
            <div class="children">
              <ul>
                <li class="product" v-for="(item,index) in phoneList" :key="index">
             <!-- <a v-bind:href="" target="_blank">-->
                  <a :href="'/#/product/'+item.id" target="_blank">
                    <div class="pro-img">
                      <!--<img :src="item.mainImage" :alt="item.subtitle">-->
                      <img v-lazy="item.mainImage" :alt="item.subtitle">
                    </div>
                    <div class="pro-name">{{item.name}}</div>
                    <div class="pro-price">{{item.price | currency}}</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <div class="item-menu">
            <span>RedMi红米</span>
            <div class="children">
              <ul>
                <li class="product">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <!--<img src="/imgs/nav-img/nav-1.png" alt="">-->
                      <img v-lazy="'/imgs/nav-img/nav-1.png'" alt="">
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799元</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <div class="item-menu">
            <span>电视</span>
            <div class="children"></div>
          </div>
        </div>
        <div class="header-search">
          <div class="wrapper">
            <input type="text" name="keyword">
            <a href="javascript:;"></a>
          </div>
        </div>
      </div>
    </div>
  </div>

</template>

<script>
import { mapState } from 'vuex'
export default {
  name: "nav-header",
  data() {
    return {
      // username: this.$store.state.username, 有延迟，使用computed获取
      phoneList: []
    }
  },
  computed:{
    // username(){
    //   return this.$store.state.username;
    // },
    // cartCount(){
    //   return this.$store.state.cartCount;
    // }
    ...mapState(['username','cartCount'])
  },
  // 局部过滤器
  filters:{
    currency(val){
      if (!val) return '0.00';
      return '￥' + val.toFixed(2) + '元';
    }
  },
  mounted() {
    this.getProductList()
    let params = this.$route.params;
    if(params && params.from == 'login'){
      this.getCartCount();
    }
  },
  methods:{
    login(){
      this.$router.push('/login')
    },
    getProductList(){
      this.axios.get('/products', {
        params:{
          categoryId: '100012',
          pageSize:6
        }
      }).then((res) => {
        if(res.list.length >= 6) {
          this.phoneList = res.list.slice(0,6)
        }
      })
    },
    getCartCount(){
      this.axios.get('/carts/products/sum').then((res=0)=>{
        this.$store.dispatch('saveCartCount', res)
      })
    },
    logout(){
      this.axios.post('/user/logout').then(()=>{
        this.$message.success('退出成功');
        this.$cookie.set('userId','',{expires:'-1'});
        this.$store.dispatch('saveUserName','');
        this.$store.dispatch('saveCartCount','0');
      })
    },
    goToCart(){
      this.$router.push('/cart')
    }
  }
}
</script>

<style lang="scss">
/*@import './public/assets/scss/base.scss'*/
@import './../assets/scss/base.scss';
@import './../assets/scss/mixin.scss';
@import './../assets/scss/config.scss';
.header{
  .nav-topbar{
    height: 39px;
    line-height: 39px;
    background-color: #333333;
    color: #B0B0B0;
    .container{
      @include flex();
      a{
        display: inline-block;
        color: #B0B0B0;
        margin-right: 17px;
      }
      .my-cart{
        width: 110px;
        background-color: #FF6600;
        text-align: center;
        color: #ffffff;
        margin-right: 0;
        .icon-cart{
          @include bgImg(16px,12px,'/public/imgs/icon-cart-checked.png');
          margin-right: 4px;
        }
      }
    }
  }
  .nav-header{
    .container {
      position: relative;
      height: 112px;
      @include flex();
      .header-menu{
        display: inline-block;
        width: 643px;
        padding-left: 209px ;
        .item-menu{
          display: inline-block;
          color: #333333;
          font-weight: bold;
          font-size: 16px;
          line-height: 112px;
          margin-left: 20px;
          span{
            cursor: pointer;
          }
          &:hover {
            color: $colorA;
            .children {
              height: 220px;
              opacity: 1;
            }
          }
          .children{
            position: absolute;
            top: 112px;
            left: 0;
            width: 1226px;
            height: 0;
            opacity: 0;
            overflow: hidden;
            border-top:1px solid #E5E5E5;
            box-shadow:0px 7px 6px 0px rgba(0,0,0,0.11);
            z-index: 10;
            transition: all .5s;
            background-color: #ffffff;
            .product{
              position: relative;
              float: left;
              width: 16.6%;
              height: 220px;
              font-size: 12px;
              line-height: 12px;
              text-align: center;
              a{
                display: inline-block;
              }
              img{
                width: auto;
                height: 111px;
                margin-top: 26px;
              }
              .pro-img{
                height: 137px;
              }
              .pro-name{
                font-weight: bold;
                margin-top: 19px;
                margin-bottom: 8px;
                color: $colorB;
              }
              .pro-price{
                color: $colorA;
              }
              &:before{
                content: ' ';
                position: absolute;
                top: 28px;
                right: 0;
                border-left: 1px solid $colorF;
                height: 100px;
                width: 1px;
              }
              &:last-child:before{
                display: none;
              }
            }
          }
        }
      }
      .header-search{
        width: 319px;
        .wrapper{
          height: 50px;
          border: 1px solid #E0E0E0;
          display: flex;
          align-items: center;
          input{
            border: none;
            box-sizing: border-box;
            border-right: 1px solid #E0E0E0;
            width: 264px;
            height: 50px;
            padding-left: 14px;
          }
          a{
            @include bgImg(18px,18px,'/imgs/icon-search.png');
            margin-left: 17px;
          }
        }
      }
    }
  }

}


</style>
